
การคูณหารจำนวนเชิงซ้อน
Authored by supol nilklang
Mathematics
12th Grade
35 Questions
Used 3+ times

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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
การคูณจำนวนเชิงซ้อน 3+2i และ 1-i
(3+2i)(1-i) = 3(1-i)+2i(1-i)
= 3-3i +2i-2i2
= 3-3i+2i-2(-1)
=3-3i+2i+2
=5-i
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
การคูณจำนวนเชิงซ้อน 3-2i และ 1+i
(3+2i)(1-i) = 3(1+i)-2i(1+i)
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
การคูณจำนวนเชิงซ้อน(-1,-2) และ (2,1)
(-1,-2)(2,1)=(-1-2i)(2+i)
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
การคูณจำนวนเชิงซ้อน(-2,2) และ (2,-2)
(-2,2)(2,-2)=(-2+2i)(2-2i)
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
การคูณจำนวนเชิงซ้อน(-2,3) และ (1,4)
(-2,3)(1,4)=(-2+3i)(1+4i)
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
การคูณจำนวนเชิงซ้อน(-2,2) และ (2,-2)
(-2,2)(2,-2)=(-2+2i)(2-2i)
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
ตัวผกผันการบวก Z=a+bi คือ -Z =-a-bi
ตัวผกกผันการบวกของ 3+4i คือ -3-4i
ตัวผกผันของ-3+4i คือ
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